You are viewing a plain text version of this content. The canonical link for it is here.

Posted to hdfs-issues@hadoop.apache.org by "Yi Liu (JIRA)" <ji...@apache.org> on 2015/09/01 02:44:46 UTC

[jira] [Updated] (HDFS-8995) Flaw in registration bookeeping can make DN die on reconnect

     [ https://issues.apache.org/jira/browse/HDFS-8995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yi Liu updated HDFS-8995:
-------------------------
    Assignee: Kihwal Lee

> Flaw in registration bookeeping can make DN die on reconnect
> ------------------------------------------------------------
>
>                 Key: HDFS-8995
>                 URL: https://issues.apache.org/jira/browse/HDFS-8995
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>            Priority: Critical
>         Attachments: HDFS-8995.patch
>
>
> Normally data nodes re-register with the namenode when it was unreachable for more than the heartbeat expiration and becomes reachable again. Datanodes keep retrying the last rpc call such as incremental block report and heartbeat and when it finally gets through the namenode tells it to re-register.
> We have observed that some of datanodes stay dead in such scenarios. Further investigation has revealed that those were told to shutdown by the namenode.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)